With a lull in the Terrialba volcano, power company crews are trying to reinforce the electrical system in the vicinity because it has failed in the past.
The problem is that the corrosive ash from the volcano can cause insulators to short circuit. Some 118 electric customers have lost power repeatedly because of this.
The company said that its crews are now washing the insulators and putting coverings, basically sleeves, on them in order to protect them from the ash.
In addition to residents of the area, the power is for a dairy processing facility, a radio repeater on the mountain and a large water pump, said the company, the Instituto Costarricense de Electricidad.
The firm has had 44 persons working in the area. They also installed a transformer at the peak of the volcano. There are a lot of electrical devices there, mainly to keep track of the eruptions.